Find the numerical value of the rational expression for the given value of r.
, r = -4
A. - 
B. - 
C. 
D. - 
Answer: A
Mathematics
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The vector v has initial position P and terminal point Q. Write v in the form ai + bj; that is, find its position vector.P = (2, 6); Q = (-3, -1)
A. v = 7i + 5j B. v = -7i - 5j C. v = 5i + 7j D. v = -5i - 7j
Mathematics
Express using positive exponents. Then, if possible, simplify.
-2
A. - 
B. 
C. 
D. 9x2
Mathematics
Graph the system of inequalities.
A. 
B. 
C. 
D. 
Mathematics
Write an equation for a function whose graph fits the given description.The graph of f(x) = x2 is shifted 4 units to the left. This graph is then vertically shrunk by a factor of 
and reflected across the x-axis. Finally, the graph is shifted 8 units downward.
A. y = - 
(x - 4)2 + 8
B. y = - 
(x + 4)2 - 8
C. y = - 
(x - 4)2 - 8
D. y = 
(x - 4)2 - 8
Mathematics